Question

Match the Columns.

	List 1		List 2
A	Bacteria	1	Nitrogen fixation
B	Rhizobium	2	Setting of curd
C	Lactobacillus	3	Banking of bread
D	Yeast	4	Causes malaria
E	A Protozoan	5	Causes cholera
F	A virus	6	Causes AIDS

• A. A- 5, B- 1, C- 2, D- 3, E- 4,F- 6
• B. A- 5, B- 1, C- 2, D- 3, E- 6,F- 4
• C. A- 1, B- 5, C- 2, D- 3, E- 4,F- 6
• D. A- 5, B- 1, C- 3, D- 2, E- 4,F- 6

Answer 1

The correct option is A A- 5, B- 1, C- 2, D- 3, E- 4,F- 6

The causative agent of cholera is Vibrio cholerae. Vibrio cholerae is a bacterium.
Rhizobium can form legumes on plant roots and can fix the nitrogen using the enzyme nitrogenase.
Lactobacillus is a bacterium which can convert lactose sugar of milk to lactic acid and in turn forms curd.
Yeast is used as leavening agent in bread making. Yeast converts sugar present in the dough to carbon dioxide. Due to this dough expands. When such dough is baked then air pockets formed due to carbon dioxide will give soft and spongy texture to the bread.
Malaria is caused by parasitic protozoa named Plasmodium falciparum, Plasmodium vivax.
AIDS is caused by a virus called 'Human Immunodeficiency Virus'.
So, the correct answer is option A.